An experimental program is described which investigates the laminar boundary layer near separation when the wall and separation point are in relative motion. The modal used in the investigation was a two-dimensional rotating cylinder which was tested without and with shrouds to impose an airfoil-type pressure gradient. Limited qualitative data are presented which indicate that there is a relatively large displacement of the separa¬tion point when the wall and separation point are in relative motion. These data qualitatively substantiate the analysis presented as Bart II of the present report.
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